After catching urea, it should not be immediately watered
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X-ray units is designed to the principle of low cost and high reliability,
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In the end should not be immediately watered? Here we ask senior agronomist Xiong Fei to answer this question for everyone -
Urea has the advantages of high nitrogen content, good particle traits, convenient application, less side effects on soil and crops, and relatively stable fertilizer efficiency, and is recognized as one of the best topdressing fertilizers. How to exert its best effect, and when to follow the application of urea, when water is poured, let's talk about my views.
When is the best irrigation? It should be determined flexibly according to soil moisture, soil properties, and fertilization methods. Under normal circumstances, urea applied to the soil, should be 4 to 5 days, until its role in the role of urinary enzymes, the hydrolysis is converted to easily absorbed by the soil and then watered. If the rain has just been applied or the water has just been poured before the urea is applied, the soil moisture is high, and it is obviously not necessary to immediately apply water after topdressing; however, if the soil is topped out due to continuous drought when topdressing urea, the soil should be properly applied on the basis of deep cover soil. Irrigation or watering to make urea in a wet environment from a molecular state (amide nitrogen) that is not easily adsorbed by the soil and can not easily be absorbed and utilized by crop roots, and is converted into an ionic state that is easily adsorbed by the soil and easily absorbed by the crop roots (Ammonium nitrogen), in order to achieve the purpose of dressing up and promoting growth; if the topdressing soil is seriously deficient in urea, there is no labor or time to cover the soil, and urea is applied to the surface. In this case, irrigation should be performed immediately to make urea. Dissolve and enter the deep layer of soil with water, on the one hand to prevent its volatile loss on the surface of the high temperature, on the other hand to promote its hydrolysis and transformation, and then for the crops to absorb and use; but if it is poor sand and soil holding capacity, after topdressing urea Watering can only be done a small number of times without flooding. In addition, if you immediately apply urea, if you immediately fill the water, you must not speed up irrigation, you can not rush to apply urea before rainstorm to prevent the loss of fertilizer with water.